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240012994 Rev. B [08/31/2020]
7.2 Leak Check Gas Piping
Pressure test boiler and gas connection before placing
boiler in operation.
•
Pressure test over 1/2 psig (3.5 kPa). Disconnect
boiler and its individual gas shuto valve from
gas supply system.
•
Pressure test at 1/2 psig (3.5 kPa) or less.
Isolate boiler from gas supply system by closing
manual gas shuto valve.
•
Locate leakage using gas detector, noncorrosive
detection uid, or other leak detection method
acceptable to authority having jurisdiction. Do
not use matches, candles, open ames, or other
methods that can provide ignition source.
•
Correct leaks immediately and retest.
7.3 Gas Orice - See Figure 7-2
• Models 150 = 5.8 mm ( Natural & LP)
• Models 205 = 9.0 mm ( Natural & LP)
NOTICE
Sediment trap shall be located upstream of gas
controls.
FIGURE 7-1
7 - GAS SUPPLY PIPING
FIGURE 7-2 Gas Orice Location
Gas Orice -205 shown
Green Side Down - Toward
gas valve
Gas Valve
Gas Orice
150
Gas Orice
205
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